The Semporna region is the diving and snokelling paradise of Sabah. At this vicinity there are two marine parks, including the world-famous Sipadan Island Park and Tun Sakaran Marine Park which have a very high level of marine diversity. Both Parks were established about the same time in 2004. Sipadan the only oceanic island in Malaysia, attract scuba divers from all over the world. Reef Sharks, Hammer Head Sharks, Barracudas, Sea Turtles, and host of fishes are what made the divers come back for more. The Semporna Islands Park, which is another name for Tun Sakaran Park, is formed by eight islands and three reefs. Hard and soft Corals, with a wide varieties of reef fishes like, Anemonefish, Angelfish, Butterflyfish, Cardinalfish, Damselfish, Surgeonfish, and Wrasse are found here.

Paradise Two is one of the best site for snorkelling at Mabul Island. Dense corals concentration provide many living spaces for small fish. Many species of reef fish, including family like Angelfish, Butterflyfish, Anemonefish, and Damsel fish are found here. This is also a popular place to see turtles.